There are 540 interior degrees inside a regular or an irregular 5 sided pentagon.
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The measure of an angle in an irregular pentagon can vary depending on the shape and size of the polygon. There is no fixed measure for an angle in an irregular pentagon; it can range from acute (less than 90 degrees) to obtuse (greater than 90 degrees) angles.
Exterior angles: 360 degrees Interior angles: 540 degrees
Yes providing that the 4 acute angles and the 5th angle of the irregular 5 sided pentagon add up to 540 degrees
A pentagon can be regular or irregular.
No. By definition a pentagon must have 5 edges. An irregular pentagon is a pentagon that has edges with lengths of different sizes. The internal angles of all vertices will not be identical in an irregular pentagon.